An air-to-air, ductless minisplit heat pump is a kind of sneaky device.
Pictured above at right, is the outside unit - a Fujitsu Halcyon Inverter installed a month ago. This heat pump installation is designed to heat the areas I actually live in - a core area of bedroom, kitchen, dining room, living room. And as it gets colder its proving its worth. I'm waiting for the first month's electric bill. (This time last year I was heating with electric space heaters instead of using the furnace.)
And I will be quite happy not to buy more #2 heating oil for a while. Instead of six tankfuls a season I'm hoping the full tank I have (delivered in MARCH when I didnt need it and when prices were skyhigh) will last a lot longer. I will not turn on the regular heat until it's really frigid outside, to keep the pipes in the unused rooms here from freezing....